If you buy a property for $7K does the cost of repairs it needs make it worth doing, meaning: can a neighborhood where properties go for $7K also have comps to support the value for a finished house that's priced at an amount that makes you any profit?

---one has been in place about 1 year; just started a new 1 year lease; seller says he is a PITA and it typically late on his rent, but pays the lease-ordered $25/day late fee-Seller said he wants to enter an owner carry / owner finance scenario, as he wants to spread out his tax liabilityHere's where I need your advice:-Seller paid $150k for both properties four years ago. 

I’ve never had a late payment in the five years I have had rentals! 

Is it too late if I do after my offer is accepted?

I have recently finished reading No/Low Money Down and am trying to stay creative with my financing options but also want to make sure I fully understand the process and want to make sure that I am able to present a deal that is a win/win for both of us. 

If free and clear you can look to leverage the property to take out equity and finish the 4th unit.

Rent is due on the 1st and late on the 5th.

A recent study of returns since the late 1800s found that unleveraged residential real estate outperformed the stock market on a risk-adjusted basis.

Interestingly, the cryptocurrencies also have zero practical use, just like gold from time immortal to the late 20th century (can't run a car on crypto any more than you can make a good sword from gold, so we might as well use these scarce - but otherwise useless - things for currency). 

So here are the numbers:Purchase: $65,000Rehab: $48,000Holding, closing costs & misc: $19,000Sale: $172,000Net Profit: $40,000ROI: 35%Some pictures of the finished product: